Video Claims to Show Men in Biohazard Suits Pulling a Merman from a Lake

A video from Poland has surfaced that appears to show men in biohazard suits pulling a merman from a lake. The footage was uploaded on September 26, 2015 and many have speculated if it’s an actual government cover up or if it’s a hoax. What do you think? Is this proof of actual mermaids or simply another internet prank?